JPH052606Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention relates to a floating prevention device for works such as automobile bodies, and is particularly applicable to works immersed in a liquid tank during a painting process. relates to a floating prevention device for preventing floating from a hanger of a conveyor.

(2) Prior Art Currently, dipping pretreatment and electrodeposition coating are widely used in automobile painting treatments from the viewpoint of improving rust prevention performance. In order to perform these treatments, a method is used in which the body of the automobile placed on a hanger of a trolley conveyor is immersed in a tank of treatment liquid.

However, when attempting to submerge a car body into a liquid tank, the body floats up due to the buoyancy of the air remaining in the space, causing accidents such as misalignment on the hanger or falling into the liquid tank. There was a fear that this would occur. Furthermore, in electrodeposition coating, since current is supplied through the hanger, sparks are generated when the body and hanger are separated, and the resulting heat may damage the body or hanger.

Therefore, in order to solve the above problems,
A surfacing prevention device described in Publication No. 172469/1983 has been proposed.

This device is equipped with a locking pawl supported by a leaf spring on the hanger of the trolley conveyor, and this locking pawl is engaged with a locked part such as a shock absorber through hole in the body of an automobile. This prevents the body from floating up in the liquid tank.

(3) Problems to be solved by the invention However, with the above-mentioned conventional equipment, there was no problem when producing only the same product, but when producing multiple products with different locked parts on the same line. When this is done, there is a problem in that the position of the locking pawl is fixed, making it impossible to lock a predetermined portion to be locked.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an anti-surfacing device that can quickly respond even when the position of the locked part of a work placed on a hanger differs. is a technical issue.

B. Structure of the invention (1) Means for solving the problem In order to solve the above-mentioned problem, the flotation prevention device of the present invention has an outer corner pipe fixed to a conveyance hanger, a crank groove, and a crank groove in the outer corner pipe. an inner square pipe inserted through the inner square pipe so as to be freely adjustable in position; a round pipe to which a groove-copying round bar is fixed, which is slidably supported inside the inner square pipe and protruding to the outside through the crank groove; and the groove-copying round bar. and a locking rod that is fixed to and can be engaged with the workpiece, and the crank groove is provided with a moving groove for moving the groove-copying round bar along the inner square pipe, and a locking rod that moves the groove-copying round bar along the inner square pipe. It is characterized by having a plurality of fixing grooves that allow the member to rotate to a position where it engages with a workpiece.

(2) Effect The anti-floating device of the present invention with the above-mentioned configuration can perform groove tracing by sliding the round pipe against the inner square pipe according to the size of the workpiece placed on the transfer hanger. Move the round bar along the moving groove of the crank groove. Next, when the groove-copying round bar is fitted into one of the plurality of fixing grooves, the locking bar fixed to the groove-copying round bar rotates to a position where it engages with the workpiece. Fix the workpiece to the hanger.

In addition, when the size of the workpiece is extremely large or small and cannot be accommodated using any of the multiple fixing grooves, the position of the inner square pipe relative to the outer square pipe can be adjusted so that the locking rod corresponds to the locked portion of the workpiece.

(3) Embodiment Hereinafter, an embodiment of the floating prevention device according to the present invention will be described based on the drawings.

In FIG. 1, a workpiece, an automobile body 1, has its side sill portion 4 held in place by a lifting prevention jig 3 provided on a conveyance hanger 2 suspended from a trolley conveyor (not shown). As is clear from FIG. 2, a main stay 6 and a body mounting table 7 are superimposed on the hanger cross beam 5 of the transfer hanger 2 and are fixed together with bolts and nuts 8. A flange portion 10 of a side sill of an automobile body 1 is supported on a mounting portion 9 provided on a mounting table 7. An auxiliary stay 11 extending along the longitudinal direction of the automobile body 1 hangs down from the tip of the main stay 6, and a floating prevention device 3 is attached to a reinforcing angle 12 fixed to the auxiliary stay 11. ing.

3 to 7 show details of the floating prevention device 3. As is clear from FIGS. 3 and 5, the angle 12 fixed to the auxiliary stay 11 hanging from the main stay 6 has an outer corner pipe 13 with a square cross section.
is fixed with its diagonal facing up, down, left and right. Inside this outer square pipe 13,
An inner square pipe 15 with a reinforcing plate 14 made of angle material integrally fixed to its upper surface is inserted, and the outer circumferential surface of the reinforcing plate 14 and the lower outer circumferential surface of the inner square pipe 15 are connected to the inner circumferential surface of the outer square pipe 13. By slidingly contacting the inner square pipe 15, the outer square pipe 1
3 and is slidably supported. and,
Nut 16 fixed to the upper surface of the outer corner pipe 13
A bolt 17 is screwed into the bolt 1.
By pressing the tip of 7 against the outer surface of the inner square pipe 15 through the through hole 18 of the outer square pipe 13 and further tightening the lock nut 19, the inner square pipe 15 is placed in an appropriate position relative to the outer square pipe 13. It is becoming fixed.

Inside the inner square pipe 15 is a round pipe 2.
0 is slidably supported, and this round pipe 2
0 is a spring 2 whose one end is supported by a guide shaft 21 protruding from the end plate 15a of the inner square pipe 15.
By bringing the other end of 2 into contact with the backing plate 23, it is biased to the left in the figure. One end of a groove copying round bar 24 is fixed to this round pipe 20 by a spring pin 25, and the inner square pipe 1
A connecting pipe 27 is attached to the other end of this groove-copying round bar 24 that protrudes from 5 to the outside by a spring pin 26.
One end is fixed. An L-shaped locking rod 29 that engages with the side sill portion 4 of the automobile body 1 is fixed to the other end of the connecting pipe 27 by a spring pin 28 . A grooved reinforcing plate 30 made of angle material is fixed to the lower surface of the inner square pipe 15, and a crank groove 31 formed by cutting out the grooved reinforcing plate 30 and the inner square pipe 15 has the above-mentioned groove. A round bar 24 following the groove passes through the groove. As is clear from FIG. 4, the crank groove 31 has one movement groove 31a extending in the longitudinal direction of the inner square pipe 15 on one side of the grooved reinforcing plate 30. On the other side adjacent to one side, the moving groove 31a
Three crank-shaped fixing grooves 31b branching from
have.

Next, the operation of this embodiment will be explained.

In order to roughly adjust the position of the floating prevention jig 3 according to the size of the automobile body 1 to be placed on the transfer hanger 2, first loosen the bolt 17 from the nut 16 and move the inner square pipe 1 with respect to the outer square pipe 13.
5 and tighten the bolt 17 and lock nut 19 again at the appropriate position.
The position of the inner square pipe 15 is fixed. Next, the second
As shown by the two-dot chain line in the figure, after placing the locking rod 29 in a horizontal position and positioning the groove copying round bar 24 in the moving groove 31a of the crank groove 31, this groove copying round bar 2
4 together with the round pipe 20 to the position of one of the fixing grooves 31b corresponding to the flange portion 10 of the side sill of the automobile body 1. Subsequently, when the locking rod 29 is rotated in the direction of arrow C to the position shown by the solid line in FIG. 31b, and the locking rod 29 is locked at the position where its tip engages with the flange portion 10 of the side sill.

Contrary to the above, to release the locking of the side sill flange portion 10, move the locking rod 29 to the spring 22.
After sliding it in the fixing groove 31b against the elastic force of , it is sufficient to rotate it in the direction opposite to the arrow C to the position indicated by the two-dot chain line in FIG.

Hereinafter, embodiments of the floating prevention device according to the present invention have been described in detail, but the present invention is not limited to the above-mentioned embodiments. Various minor design changes are possible.

For example, as a method for fixing a grooved round bar,
In short, it is not limited to the one in which the groove copying round bar is fitted into the end of the fixing groove by the elastic force of the spring.
Any material may be used as long as the groove tracing round rod can be fixed at an appropriate position in the longitudinal direction of the inner square pipe and the locking rod can be engaged with the automobile body. Furthermore, as a method for fixing the inner corner pipe to the outer corner pipe, in addition to using bolts, appropriate fixing means such as pins can be used.

C. Effect of the invention As mentioned above, according to the floating prevention device of the present invention,
The inner square pipe is supported on the outer square pipe fixed to the conveyance hanger so that its position can be freely adjusted for rough adjustment, and the locking rod engages with the workpiece at multiple positions along the longitudinal direction of the inner square pipe. Since the groove-copying round bar equipped with a locking mechanism is now locked and fine adjustments are made, the position of the locking rod can be quickly adjusted to suit workpieces with different positions of the locked parts, and the same line It is possible to significantly improve production efficiency when producing multiple types of products.
Moreover, in order to engage the locking rod with the workpiece, it is only necessary to slide the groove-copying round bar to which the locking rod is fixed along the movement groove, and then fit it into the predetermined fixing groove. , it is possible to perform operations easily and quickly. Further, since the inner square pipe and the round pipe slidably supported inside the inner square pipe are in line contact, there is no risk of sliding failure due to adhesion of electrodeposited paint.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of an embodiment of a floating prevention device according to the present invention, Fig. 2 is a front view thereof, Fig. 3 is a sectional view taken along the line - - in Fig. 2, and Fig. 4 is a view taken in the direction of the arrow in Fig. 3. 5 is a cross-sectional view taken along the line -- in FIG. 3, and FIG. 6 is a partial cross-sectional view of FIG. 1...Automobile body (work), 2...Transportation hanger, 3...Floating prevention device, 13...Outer corner pipe, 15...Inner corner pipe, 17...Bolt, 20...Round pipe, 22... spring, 2
4...groove copying round bar, 29...locking rod, 31...crank groove, 31a...movement groove, 31b...fixing groove, 31c...end portion.

Claims (1)

[Scope of Claim for Utility Model Registration] An anti-floating device for locking a workpiece 1 immersed in a liquid tank to a conveyance hanger 2 of a conveyor; an outer square pipe 13 fixed to the conveyance hanger 2
and the outer corner pipe 13 having a crank groove 31.
The inner square pipe 15 is inserted into the
and a round pipe 20 that is slidably supported inside the inner square pipe 15 and has a groove-following round bar 24 fixed thereto that protrudes to the outside through the crank groove 31;
A locking rod 29 is fixed to the groove copying round bar 24 and can be engaged with the workpiece 1, and the crank groove 31 is a moving groove for moving the groove copying round bar 24 along the inner square pipe 14. 31a
Then, the locking rod 29 holds this groove copying round rod 24 to the workpiece 1.
a plurality of fixing grooves 3 that are rotated to a position where they engage with the
1b.